Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf13fea2407149a…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 03:21:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 03597e499e92e6ef26a5bc1c222f1ace SHA-1: 180606949f9a562194287e1d60066624bf6bf7f2 SHA-256: abf13fea2407149a686c1471e528963a4acd1f629a759ccf25e413bd7f875788
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/free-robux-reddit-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack-client-2021-download_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/pokemon-go-free-yellow-team_GM1094591345.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-tiktok-username-and-password_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-robux-hack-penguin_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D8A 22084 bytes
SHA-256: 4cc65cd82ae0fbe93b4f269b9a1569377cf13153a713614907b7476f8a6a825e
font_01_sfnt_off00005ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA4 19112 bytes
SHA-256: 1a1cadb19cc35845f36439fdec0bd7d53704e7664d60cb0601817827df434189

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